Risk factor | Adverse | Favorable |
Hepatomegaly (cm from costal arch) | >2 cm | ≤2 cm |
Liver fibrosis | Presence | Absence |
Iron chelation therapy | Irregular | Regular |
Risk class | ||
Class I patients have all three favorable risk factors | ||
Class II patients have one or two adverse risk factors | ||
Class III patients have all three adverse risk factors |